What happens if you use 87 octane instead of 91?
“Use premium unleaded gasoline with a posted octane rating of 91 or higher. If the octane rating is less than 91, you could damage the engine and may void your vehicle warranty. Some manufacturers recommend premium gas but say that regular or mid-grade gas can be used instead.
Does 91 octane give better gas mileage?
So is Higher Octane Fuel More Efficient? In a word, no. On its own paying for premium gasoline does not make your car run better or get greater gas mileage. Giving your car the fuel it requires to run smoothly and efficiently, without damage to the engine, does make a difference in your fuel mileage.
Will 91 octane hurt my engine?
The main difference with premium is its octane rating — 91 or higher compared with 87 for regular octane. The higher octane gives premium gas greater resistance to early fuel ignition, which can result in potential damage, sometimes accompanied by audible engine knocking or pinging.
Should I use 87 octane 91?
Regular gas is rated at 87 octane in most states, while premium gas is often rated higher at 91 or 93. Fuel with a higher octane rating can stand up to higher compression before it detonates. Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time.
Does 87 octane damage engine?
Higher octane gasoline is designed to help prevent engine knock. This phenomenon isn’t typically harmful to your engine if it happens occasionally, but repeated engine knock can speed up wear and tear.
Is it worth buying higher octane gas?
Typically, high-performance cars require premium, because their engines have higher compression ratios, while other cars can run just fine on lower octane gas. The FTC sums it up this way: “In most cases, using a higher octane gasoline than your owner’s manual recommends offers absolutely no benefit.”
What is the best gas to put in your car?
It is better for your car to use 87, 88 or even 91-octane gas than to go too low. If you have a luxury car that needs premium gas, try to fill up before driving to a high-altitude location in case you cannot find a gas station that provides the octane you need.
Does premium gas give you better gas mileage?
Premium gas gives you more miles per gallon than regular gas. In actual fact, you’ll get a greater range of fuel economy between different brands of regular gas, than you will between the same manufacturer’s regular and premium gasses.
Is unleaded 87 regular gas?
Gasoline with an octane level of 87 is considered “regular,” with gasoline sold at 89 octane often labeled “midgrade” by most gas stations.
What’s the difference between 91 and 87 gas?
Two common octane ratings are 87 and 91. The main difference between 87 and 91 octane gas is just the additive that they add to it. They are still the same unleaded gasoline that will work on your car. The purpose of the additive is to make the gas more resistant to pre-detonation,…
What is the best octane for gasoline?
At a minimum, you should use premium 91 octane gasoline or higher. Avoid using low octane gas such as: Regular Unleaded Octane 87. Plus Midgrade Unleaded Octane 89.
Can I use regular 87 octane gas?
If your car is designed for regular 87-octane gas, you’re in luck . You can safely use the cheap stuff. Premium fuel won’t make the engine run better or produce more power. There’s simply no benefit to buying premium fuel unless there’s a difference in the ethanol content. It’s not uncommon for regular gas to be up to 15 percent ethanol (often called ‘E15’) and the premium option to be ethanol-free.
What is regular 88 fuel and can I use it?
Regular 88 (otherwise known as E15 or Unleaded 88) is an 88 octane fuel available at many Family Express® locations. This grade of fuel contains up to 15% ethanol. Regular 88 is EPA approved for use in model year 2001 and newer cars, light duty trucks, and flex fuel vehicles. Regular 88 is not only available at a lower cost, but also delivers optimum performance with a smaller amount of emissions.